EP2308062A1 - Process for producing a pole tube and pole tube - Google Patents

Process for producing a pole tube and pole tube

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Publication number
EP2308062A1
EP2308062A1 EP09777376A EP09777376A EP2308062A1 EP 2308062 A1 EP2308062 A1 EP 2308062A1 EP 09777376 A EP09777376 A EP 09777376A EP 09777376 A EP09777376 A EP 09777376A EP 2308062 A1 EP2308062 A1 EP 2308062A1
Authority
EP
European Patent Office
Prior art keywords
pipe section
pole
pole tube
groove
stroke limiter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09777376A
Other languages
German (de)
French (fr)
Other versions
EP2308062B1 (en
Inventor
Roland Schempp
Jürgen Grün
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2308062A1 publication Critical patent/EP2308062A1/en
Application granted granted Critical
Publication of EP2308062B1 publication Critical patent/EP2308062B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/127—Assembling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F2007/163—Armatures entering the winding with axial bearing

Definitions

  • the invention is based on a method for producing a pole tube of a Hubmagnetanssen having the features of the preamble of claim 1.
  • Known methods for producing a pole tube for lifting magnets e.g. for the actuation of hydraulic valves are mechanical joining methods in the form of plug-in, snap and clamp connections or forming techniques.
  • Hubbegrenzungen and pipe pieces joined There are u.a. Hubbegrenzungen and pipe pieces joined.
  • mechanical joints usually cause process-related geometric and structural irregularities.
  • crimping or crimping the joining partners are joined together by plastic deformation so that burrs are created which require reworking. The cold deformation also increases the strength of the material and thus the cracking tendency of the material.
  • the invention has for its object to further develop a method for producing a pole tube of a solenoid assembly with the features of the preamble of claim 1 so that a reliable mechanical connection is generated as easily and inexpensively.
  • the object is achieved by a method for producing a pole tube of a Hubmagnetan kann with the features of claim 1.
  • the object is also achieved by a pole tube, which is produced by such a method.
  • the inventive method for producing a pole tube of a Hubmagnetan kann with a sleeve-shaped pole tube body, which is divided into a pole section and a pipe section and a Hubbegrenzung comprises the following steps: The provision of the pipe section, providing the Hubbegrenzung and / or Polab couponses each with egg - ner on the outside radially encircling groove, arranging a free end of the pipe section over the respective groove and the molding of the pipe section end dimensionally accurate in the groove by continuous reduction over its entire circumference.
  • This method makes it possible to inexpensively produce a mechanical joint connection with high compressive strength while maintaining the surface condition and the nature of the material, in particular the corrosion protection and without post-processing.
  • the indentation is not punctiform as in crimping, but by uniform reduction over the entire circumference.
  • Rotary swaging is a non-cutting, incremental forming process for reducing the cross-section of, among other things, pipe sections and e ⁇ produces large degrees of deformation without heat treatment.
  • the method is also suitable for the transformation of brittle materials. This is due to the favorable state of stress during forming and to the homogeneous forming process.
  • Rotary swaging allows an uninterrupted fiber flow in the workpiece.
  • the strain hardening of the material introduced by the forming process can be used for component strength.
  • the surface quality produced by the rotary kneading has the level of polished surfaces. The tolerable tolerances are so narrow that a reworking usually unnecessary.
  • the stroke limiter has a contact surface to which the end of the pipe section is brought easily and quickly to the plant and thus precisely positioned.
  • the joining portion widens on a shoulder on the inside and goes into a Einformabites with reduced wall thickness at extended inner diameter Ü over.
  • the reduced wall thickness allows reducing the deformation energy.
  • the stroke limiter on the pipe section side has a seal for pressure relief, the wall thickness can be additionally reduced, since in the joint area only tensile forces, but not tangential or radial forces occur.
  • the stroke limiter has a bulge which delimits the annular groove on the pipe section side and forms a forming edge on which the molded-in section is bent over at an angle between 90 ° and 130 °. Due to the geometry, the joint connection is particularly resistant to tension.
  • the curvature also serves as a contact surface for the shoulder, which simplifies the arrangement of the joining partners before forming.
  • FIG. 1 shows a longitudinal section of a pole tube according to the invention
  • Figure 2 shows the basic features of a flow chart for the inventive method for producing a pole tube of a Hubmagnetan ever.
  • FIG. 1 shows a sleeve-shaped pole tube body 1, which is divided axially into a pole section 2, a tube section 3 and a stroke limiter 4, which together form a receiving space 5 for an armature of a lifting magnet.
  • the stroke limiter 4 has on its outer side a radially circumferential groove 6.
  • the pipe section 3 has a main section 7 with regular wall thickness and a front-side joint section 8 with a smaller wall thickness.
  • the joining section 8 widens on the inside on a shoulder 9 and merges into an infill section 10 with reduced wall thickness with an enlarged diameter.
  • the stroke limiter 4 has a contact surface, which results from a bulge 12 limiting the annular groove 6 on the pipe section side.
  • the bulge 12 forms a forming edge 13 for the pipe section end 11.
  • the stroke limiter has at the pipe section end 11 an additional annular groove 14 for receiving a sealing ring 15th
  • the pole section 2 has on its outer side a radially encircling groove 6 ', the shape that the groove 6' pipe section side has an inclined side wall 16 and the second side wall 17 forms a flank of an outer ring 18.
  • the pole section 2 has at the pipe section end an additional annular groove 14 'for receiving a sealing ring 15'.
  • the wall thickness is not reduced in contrast to the hubbegrren- tion side pipe section end 11.
  • the pole 2 and pipe section 3 is made in one piece, but it is also a joint connection between these two sections possible, as shown. Then, the formation of the polab mustard solution end 11 'of the pipe section 3 with a joint section corresponding to the execution of the hubbegrenzungs district area would be possible.
  • a first step s1 the pipe section 3 is provided.
  • a second step s2 the stroke limiter 4 and / or the pole section 2 are provided.
  • a third step s3 the pipe section end 11 is pushed over the stroke limiter 4 until the pipe section end 11 strikes the abutment surface of the stroke limiter 4 and / or the pipe section end 11 'is arranged over the pole section 2 with stop on the outer ring 18.
  • the anchor, the anti-stick disc and, if necessary, the ram are mounted.
  • a fourth step s4 the dimensionally accurate fitting into the annular groove 6 of the stroke limiter 4 takes place by the continuous reduction of the tube section end 11 over its entire circumference.
  • the respective end 11 or 11 'of the pipe section 3 is arranged above the respective groove 6 or 6'. If the pipe section 3 is connected to the stroke limiter 4, the shoulder 9 of the pipe section 3 with the forming edge 13 of the lifting 4 limit brought to the plant. If the pipe section 3 is connected to the pole section 2, the pipe section end 11 'is arranged above the pole section 2 until it bears against the outer ring 18 of the pole section.
  • the pipe section 3 and the stroke limiter 4 and the pole section 2 are arranged one above the other and inserted into the tool.
  • the force effect of a pulsed magnetic field is used for acceleration and subsequent deformation of deformation elements made of electrically conductive material.
  • Tools are coils and field translators, which flow through a current pulse generate a pulse-like magnetic field, which exerts a pulsar- and depending on the current very high, inwardly directed force by induction and the generation of an eddy current in the pipe section 3.
  • a plastic deformation takes place when the force is above the yield point of the pipe section 3. The deformation takes place without damaging the surfaces. Due to the high repeatability of the deformation process in only 0.1 s, the manufacturing costs are reduced.
  • the inventive method is used to add at least 2 components, the pipe section and the stroke limiter and / or the pipe section and the pole section are joined.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention relates to a process for producing a pole tube having a bushing-shaped pole tube body which is axially subdivided into a pole portion and a tube portion with a tube portion end and a stroke limiter provided with a groove, as a result of which a space for receiving an armature of the lifting magnet is formed. The process comprises: the provision of the tube portion, the provision of the stroke limiter and/or of the pole portion each with a radially encircling groove on the outer side, the arrangement of the tube portion end over the respective groove and the dimensionally accurate integral forming of the tube portion end in the groove by continuous reduction over the entire circumference of said end. This process makes it possible to produce a mechanical join with a high compressive strength at low cost, while retaining the surface properties and the properties of the material, in particular the corrosion protection, and without reprocessing. In particular, the integral forming is not carried out selectively, as in the case of crimping, but rather by uniform reduction over the entire circumference.

Description

Beschreibung description
Verfahren zur Herstellung eines Polrohres und PolrohrMethod for producing a pole tube and pole tube
Die Erfindung geht aus von einem Verfahren zur Herstellung eines Polrohres einer Hubmagnetanordnung, das die Merkmale aus dem Oberbegriff des Anspruchs 1 aufweist. Bekannte Verfahren zur Herstellung eines Polrohres für Hubmagnete, z.B. zur Betätigung von Hydraulikventilen sind mechanische Fügeverfahren in Form von Steck-, Schnapp- und Klemmverbindungen oder Umformtechniken. Es werden u.a. Hubbegrenzungen und Rohrstücke gefügt. Allerdings verursachen mechanische Fügeverbindungen in der Regel verfahrensbedingte geometrische und kon- struktive Unebenheiten. Beim Crimpen bzw. Bördeln werden die Fügepartner durch plastische Verformung miteinander verbunden, so dass Grate entstehen, die eine Nacharbeit erforderlich machen. Durch die Kaltverformung steigt zudem die Festigkeit des Werkstoffes und somit die Rissbildungsneigung des Werkstoffes.The invention is based on a method for producing a pole tube of a Hubmagnetanordnung having the features of the preamble of claim 1. Known methods for producing a pole tube for lifting magnets, e.g. for the actuation of hydraulic valves are mechanical joining methods in the form of plug-in, snap and clamp connections or forming techniques. There are u.a. Hubbegrenzungen and pipe pieces joined. However, mechanical joints usually cause process-related geometric and structural irregularities. When crimping or crimping, the joining partners are joined together by plastic deformation so that burrs are created which require reworking. The cold deformation also increases the strength of the material and thus the cracking tendency of the material.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung eines Polrohres einer Hubmagnetanordnung mit den Merkmalen aus dem Oberbegriff des Anspruchs 1 so weiterzuentwickeln, dass eine zuverlässige mechanische Verbindung möglichst einfach und kostengünstig erzeugt wird.The invention has for its object to further develop a method for producing a pole tube of a solenoid assembly with the features of the preamble of claim 1 so that a reliable mechanical connection is generated as easily and inexpensively.
Diese Aufgabe wird durch ein Verfahren zur Herstellung eines Polrohres einer Hubmagnetanordnung mit den Merkmalen des Anspruchs 1 gelöst. Die Aufgabe wird ebenso durch ein Polrohr gelöst, das nach einem solchen Verfahren hergestellt ist. Das erfindungsgemäße Verfahren zur Herstellung eines Polrohres einer Hubmagnetanordnung mit einem büchsenförmig ausgebildeten Polrohrkörper, der sich in einen Polabschnitt sowie einen Rohrabschnitt und eine Hubbegrenzung gliedert, umfasst die folgenden Schritte: Das Bereitstellen des Rohrabschnittes, das Bereitstellen der Hubbegrenzung und/oder des Polabschnittes mit jeweils ei- ner an der Außenseite radial umlaufenden Nut, das Anordnen eines freien Endes des Rohrabschnittes über der jeweiligen Nut und das Einformen des Rohrabschnittendes formgenau in die Nut durch kontinuierli- ches Reduzieren auf seinem gesamten Umfang.This object is achieved by a method for producing a pole tube of a Hubmagnetanordnung with the features of claim 1. The object is also achieved by a pole tube, which is produced by such a method. The inventive method for producing a pole tube of a Hubmagnetanordnung with a sleeve-shaped pole tube body, which is divided into a pole section and a pipe section and a Hubbegrenzung comprises the following steps: The provision of the pipe section, providing the Hubbegrenzung and / or Polabschnittes each with egg - ner on the outside radially encircling groove, arranging a free end of the pipe section over the respective groove and the molding of the pipe section end dimensionally accurate in the groove by continuous reduction over its entire circumference.
Dieses Verfahren erlaubt es, kostengünstig eine mechanische Fügeverbindung mit hoher Druckfestigkeit unter Beibehaltung der Oberflächenbeschaffenheit und der Beschaffenheit des Werkstoffes, insbesondere des Korrosionsschutzes und ohne Nachbearbeitung zu erzeugen. Insbesondere erfolgt die Einformung nicht punktuell wie beim Crimpen, sondern durch gleichmäßige Reduzierung über den gesamten Umfang.This method makes it possible to inexpensively produce a mechanical joint connection with high compressive strength while maintaining the surface condition and the nature of the material, in particular the corrosion protection and without post-processing. In particular, the indentation is not punctiform as in crimping, but by uniform reduction over the entire circumference.
Weitere vorteilhafte Ausgestaltungen eines erfindungsgemäßen Verfahrens zur Herstellung einer Hubmagnetanordnung sind in den Unteransprüchen angegeben.Further advantageous embodiments of a method according to the invention for producing a lifting magnet arrangement are specified in the subclaims.
Erfolgt das Einformen des Rohrabschnittes durch ein Rundknetverfahren, läuft der Umformprozess schnell und kostengünstig ohne Nachbearbeitung ab. Das Rundkneten ist ein spanloses, inkrementelles Umformverfahren für das Reduzieren des Querschnittes u.a. von Rohrstücken und e§ erzeugt große Umformgrade ohne Wärmebehandlung. Das Verfahren eignet sich auch für die Umformung spröder Werkstoffe. Dies ist auf den günstigen Spannungszustand während der Umformung und auf den homogenen Umformablauf zurückzuführen. Rundkneten ermöglicht einen ununterbrochenen Faserverlauf im Werkstück. Die durch die Umformung eingebrachte Kaltverfestigung des Werkstoffs lässt sich für die Bauteilfestigkeit nutzen. Die durch das Rundkneten erzeugte Oberflächenqualität hat das Niveau geschliffener Flächen. Die einhaltbaren Toleranzen sind so eng, dass sich eine spanende Nacharbeit zumeist erübrigt. Dadurch kann Werk- stoff eingespart und die Prozesskette verkürzt werden. Konsequenz sind niedrige Stückkosten. Wenn das Einformen des Rohrabschnittes mittels eines elektromagnetischen Pulsformungsverfahrens erfolgt, insbesondere einem elektromagnetischen Pulsfügen, dann wird eine konstante und formgenaue sowie druckfeste Umformung der Fügepartner ohne Gratbildung erreicht. Bei diesem Verfahren wird die Kraftwirkung eines impulsförmigen Magnetfelds zur Beschleunigung und zur anschließenden Verformung von Deformationselementteilen aus elektrisch leitfähigem Material genutzt. Die Verformung erfolgt ohne Beschädigung der Oberflächen. Werkzeuge sind Spulen und Feldübersetzer, die von einem Stromimpuls durchflössen ein pulsartiges magnetisches Feld erzeugen, das mittels Induktion und über die Erzeugung eines Wirbelstromes im Werkstück auf die eingelegten, elektrisch leitfähigen Elemente eine pulsartige und abhängig von der Stromstärke sehr hohe Kraft ausübt. Es erfolgt sofort eine plastische Verformung, wenn die Kraft über der Fließgrenze des Werkstückes liegt. Aufgrund der hohen Wiederholgenauigkeit des Verformungsvorganges in nur 0,1s werden die Herstellkosten reduziert.If the molding of the pipe section by a rotary swaging method, the forming process runs quickly and inexpensively without reworking. Rotary swaging is a non-cutting, incremental forming process for reducing the cross-section of, among other things, pipe sections and e§ produces large degrees of deformation without heat treatment. The method is also suitable for the transformation of brittle materials. This is due to the favorable state of stress during forming and to the homogeneous forming process. Rotary swaging allows an uninterrupted fiber flow in the workpiece. The strain hardening of the material introduced by the forming process can be used for component strength. The surface quality produced by the rotary kneading has the level of polished surfaces. The tolerable tolerances are so narrow that a reworking usually unnecessary. As a result, material can be saved and the process chain shortened. The consequence is low unit costs. If the molding of the pipe section by means of an electromagnetic pulse shaping process, in particular an electromagnetic pulse joining, then a constant and dimensionally accurate and pressure-resistant deformation of the joining partners is achieved without burr formation. In this method, the force effect of a pulse-shaped magnetic field is used for the acceleration and subsequent deformation of deformation element parts made of electrically conductive material. The deformation takes place without damaging the surfaces. Tools are coils and field translators, which flow through a current pulse generate a pulse-like magnetic field, which exerts a pulse-like and highly dependent on the current strength by induction and the generation of an eddy current in the workpiece on the inserted, electrically conductive elements. Immediate plastic deformation occurs when the force is above the yield point of the workpiece. Due to the high repeat accuracy of the deformation process in only 0.1s, the manufacturing costs are reduced.
Gemäß einer besonders bevorzugten Ausgestaltung hat die Hubbegrenzung eine Anlagefläche, an welche das Rohrabschnittende einfach und schnell zur Anlage gebracht wird und somit präzise positioniert ist.According to a particularly preferred embodiment, the stroke limiter has a contact surface to which the end of the pipe section is brought easily and quickly to the plant and thus precisely positioned.
Dadurch dass sich der Rohrabschnitt in einen Hauptabschnitt mit normaler Wandstärke und in einen hubbegrenzungsseitigen Fügeabschnitt mit geringerer Wandstärke aufteilt, kann die nötige Verformungsenergie reduziert werden.The fact that the pipe section is divided into a main section with a normal wall thickness and a hubbegrenzungsseitigen joint section with a smaller wall thickness, the necessary deformation energy can be reduced.
Gemäß einer besonders bevorzugten Ausgestaltung der vorliegenden Erfindung weitet sich der Fügeabschnitt an einer Schulter innen auf und geht in einen Einformabschnitt mit reduzierter Wandstärke bei erweitertem Innendurchmesser ü- ber. Die reduzierte Wandstärke erlaubt ein Reduzieren der Verformungsenergie. Wenn die Hubbegrenzung rohrabschnittseitig eine Dichtung zur Druckentlastung aufweist, kann die Wandstärke zusätzlich reduziert werden, da im Fügebereich nur noch Zugkräfte, nicht aber Tangential- oder Radialkräfte auftreten. Vorzugsweise weist die Hubbegrenzung eine die Ringnut rohrabschnittseitig begrenzende Aufwölbung auf, die eine Umformkante bildet, an der der Einformabschnitt in einem Winkel zwischen 90° und 130° umgebogen ist. Durch die Geometrie ist die Fügeverbindung besonders zugfest.According to a particularly preferred embodiment of the present invention, the joining portion widens on a shoulder on the inside and goes into a Einformabschnitt with reduced wall thickness at extended inner diameter Ü over. The reduced wall thickness allows reducing the deformation energy. If the stroke limiter on the pipe section side has a seal for pressure relief, the wall thickness can be additionally reduced, since in the joint area only tensile forces, but not tangential or radial forces occur. Preferably, the stroke limiter has a bulge which delimits the annular groove on the pipe section side and forms a forming edge on which the molded-in section is bent over at an angle between 90 ° and 130 °. Due to the geometry, the joint connection is particularly resistant to tension.
Die Aufwölbung dient zudem als Anlagefläche für die Schulter, das vereinfacht die Anordnung der Fügepartner vor der Umformung.The curvature also serves as a contact surface for the shoulder, which simplifies the arrangement of the joining partners before forming.
Nachfolgend werden die vorliegende Erfindung und deren Vorteile unter Bezug- nähme auf das in den Figuren dargestellte Ausführungsbeispiel näher erläutert.The present invention and its advantages will be explained in more detail below with reference to the embodiment shown in the figures.
Es zeigenShow it
Fig.1 einen Längsschnitt eines erfindungsgemäßen Polrohres, Fig.2 die Grundzüge eines Ablaufschemas für das erfindungsgemäße Verfahren zur Herstellung eines Polrohres einer Hubmagnetanordnung.1 shows a longitudinal section of a pole tube according to the invention, Figure 2 shows the basic features of a flow chart for the inventive method for producing a pole tube of a Hubmagnetanordnung.
In der Figur 1 ist ein büchsenförmig ausgebildeter Polrohrkörper 1 dargestellt, welcher sich axial in einen Polabschnitt 2, einen Rohrabschnitt 3 und eine Hubbegrenzung 4 gliedert, die gemeinsam einen Aufnahmeraum 5 für einen Anker eines Hubmagneten bilden.1 shows a sleeve-shaped pole tube body 1, which is divided axially into a pole section 2, a tube section 3 and a stroke limiter 4, which together form a receiving space 5 for an armature of a lifting magnet.
Die Hubbegrenzung 4 hat an ihrer Außenseite eine radial umlaufende Nut 6. Der Rohrabschnitt 3 weist einen Hauptabschnitt 7 mit regulärer Wandstärke und einen stirnseitigen Fügeabschnitt 8 mit geringerer Wandstärke auf. Der Fügeabschnitt 8 weitet sich innen an einer Schulter 9 auf und geht in einen Einformabschnitt 10 mit reduzierter Wandstärke bei erweitertem Durchmesser über.The stroke limiter 4 has on its outer side a radially circumferential groove 6. The pipe section 3 has a main section 7 with regular wall thickness and a front-side joint section 8 with a smaller wall thickness. The joining section 8 widens on the inside on a shoulder 9 and merges into an infill section 10 with reduced wall thickness with an enlarged diameter.
Die Hubbegrenzung 4 besitzt eine Anlagefläche, die sich durch eine die Ringnut 6 rohrabschnittseitig begrenzende Aufwölbung 12 ergibt. Die Aufwölbung 12 bildet für das Rohrabschnittende 11 eine Umformkante 13. Die Hubbegrenzung besitzt am rohrabschnittseitigen Ende 11 eine zusätzliche Ringnut 14 zur Aufnahme eines Dichtringes 15.The stroke limiter 4 has a contact surface, which results from a bulge 12 limiting the annular groove 6 on the pipe section side. The bulge 12 forms a forming edge 13 for the pipe section end 11. The stroke limiter has at the pipe section end 11 an additional annular groove 14 for receiving a sealing ring 15th
In der oberen Bildhälfte ist der Rohrabschnitt 3 nicht eingeformt, in der unteren Bildhälfte ist der Rohrabschnitt 3 über die Umformkante 13 in einem Winkel von 120° eingefügt.In the upper half of the tube section 3 is not formed, in the lower half of the tube section 3 is over the forming edge 13 at an angle of 120 ° inserted.
Der Polabschnitt 2 hat an seiner Außenseite eine radial umlaufende Nut 6', der Gestalt, dass die Nut 6' rohrabschnittseitig eine schräg angestellte Seitenwand 16 besitzt und die zweite Seitenwand 17 eine Flanke eines Außenringes 18 bildet. Der Polabschnitt 2 besitzt am rohrabschnittseitigen Ende eine zusätzliche Ringnut 14' zur Aufnahme eines Dichtringes 15'. Bei dem polabschnittseitigen Ende 11 ' des Rohrabschnittes 3 ist die Wandstärke im Gegensatz zu dem hubbegren- zungsseitigen Rohrabschnittende 11 nicht reduziert. Oft ist auch der Pol- 2 und Rohrabschnitt 3 einstückig ausgeführt, es ist jedoch auch eine Fügeverbindung zwischen diesen beiden Abschnitten möglich, wie gezeigt. Dann wäre auch die Ausbildung des polabschnittseitigen Endes 11 ' des Rohrabschnittes 3 mit einem Fügeabschnitt entsprechend der Ausführung des hubbegrenzungsseitigen Endes 11 des Rohrabschnittes 3 möglich.The pole section 2 has on its outer side a radially encircling groove 6 ', the shape that the groove 6' pipe section side has an inclined side wall 16 and the second side wall 17 forms a flank of an outer ring 18. The pole section 2 has at the pipe section end an additional annular groove 14 'for receiving a sealing ring 15'. In the polabschnittseitigen end 11 'of the pipe section 3, the wall thickness is not reduced in contrast to the hubbegrren- tion side pipe section end 11. Often, the pole 2 and pipe section 3 is made in one piece, but it is also a joint connection between these two sections possible, as shown. Then, the formation of the polabschnittseitigen end 11 'of the pipe section 3 with a joint section corresponding to the execution of the hubbegrenzungsseitigen end 11 of the pipe section 3 would be possible.
Das in Figur 2 abgebildete Ablaufschema zeigt das Einformen des Rohrabschnittes 3.The illustrated in Figure 2 flow chart shows the molding of the pipe section. 3
In einem ersten Schritt s1 wird der Rohrabschnitt 3 bereitgestellt. In einem zweiten Schritt s2 wird die Hubbegrenzung 4 und /oder der Polabschnitt 2 bereitgestellt.In a first step s1, the pipe section 3 is provided. In a second step s2, the stroke limiter 4 and / or the pole section 2 are provided.
In einem dritten Schritt s3 wird das Rohrabschnittende 11 über die Hubbegrenzung 4 geschoben, bis das Rohrabschnittende 11 an der Anlagefläche der Hubbegrenzung 4 anschlägt und/oder das Rohrabschnittende 11' wird über den Polabschnitt 2 mit Anschlag am Außenring 18 angeordnet. Zuvor wird der Anker, die Antiklebscheibe und ggf. der Stößel montiert.In a third step s3, the pipe section end 11 is pushed over the stroke limiter 4 until the pipe section end 11 strikes the abutment surface of the stroke limiter 4 and / or the pipe section end 11 'is arranged over the pole section 2 with stop on the outer ring 18. Beforehand, the anchor, the anti-stick disc and, if necessary, the ram are mounted.
In einem vierten Schritt s4 erfolgt das formgenaue Einpassen in die Ringnut 6 der Hubbegrenzung 4 durch das kontinuierliche Reduzieren des Rohrabschnittendes 11 auf seinem gesamten Umfang.In a fourth step s4, the dimensionally accurate fitting into the annular groove 6 of the stroke limiter 4 takes place by the continuous reduction of the tube section end 11 over its entire circumference.
Beim Einformen des Rohrabschnittes 3 durch das Rundknetverfahren wird das jeweilige Ende 11 bzw. 11' des Rohrabschnittes 3 über der jeweiligen Nut 6 bzw. 6' angeordnet. Wird der Rohrabschnitt 3 mit der Hubbegrenzung 4 verbunden, wird die Schulter 9 des Rohrabschnittes 3 mit der Umformkante 13 der Hubbe- grenzung 4 zur Anlage gebracht. Wird der Rohrabschnitt 3 mit dem Polabschnitt 2 verbunden, wird das Rohrabschnittende 11 ' über dem Polabschnitt 2 angeordnet, bis es am Außenring 18 des Polabschnittes anliegt.When molding the pipe section 3 by the rotary swaging method, the respective end 11 or 11 'of the pipe section 3 is arranged above the respective groove 6 or 6'. If the pipe section 3 is connected to the stroke limiter 4, the shoulder 9 of the pipe section 3 with the forming edge 13 of the lifting 4 limit brought to the plant. If the pipe section 3 is connected to the pole section 2, the pipe section end 11 'is arranged above the pole section 2 until it bears against the outer ring 18 of the pole section.
Nach Einbringen in eine Rundknetmaschine erfolgt die inkrementelle Umformung des jeweiligen Rohrabschnittendes 11 , 11 ' mittels Werkzeugsegmenten, die in schneller Folge gleichzeitig radiale Auf- und Abwärtsbewegungen durchführen. Bei jeder Abwärtsbewegung des Werkzeugsatzes wird ein Teil des Werkstückes umgeformt, bis der gesamte Querschnitt reduziert ist. Die erzeugte Oberflächenqualität hat das Niveau geschliffener Flächen.After introduction into a rotary swaging machine, the incremental deformation of the respective pipe section end 11, 11 'takes place by means of tool segments which simultaneously perform radial upward and downward movements in rapid succession. With each downward movement of the tool set, a part of the workpiece is reshaped until the entire cross section is reduced. The surface quality produced has the level of polished surfaces.
Wenn das Einformen des Rohrabschnittes mittels eines elektromagnetischen Pulsformungsverfahrens erfolgt, werden der Rohrabschnitt 3 und die Hubbegrenzung 4 bzw. der Polabschnitt 2, wie im vorigen Absatz beschrieben, übereinander angeordnet und in das Werkzeug eingelegt . Bei diesem Verfahren wird die Kraft- Wirkung eines impulsförmigen Magnetfelds zur Beschleunigung und zur anschließenden Verformung von Deformationselementen aus elektrisch leitfähigem Material genutzt. Werkzeuge sind Spulen und Feldübersetzer, die von einem Stromimpuls durchflössen ein pulsartiges magnetisches Feld erzeugen, das mittels Induktion und über die Erzeugung eines Wirbelstromes im Rohrabschnitt 3 eine pulsar- tige und abhängig von der Stromstärke sehr hohe, nach innen gerichtete Kraft ausübt. Es erfolgt sofort eine plastische Verformung, wenn die Kraft über der Fließgrenze des Rohrabschnittes 3 liegt. Die Verformung erfolgt ohne Beschädigung der Oberflächen. Aufgrund der hohen Wiederholgenauigkeit des Verformungsvorganges in nur 0,1 s werden die Herstellkosten reduziert.If the molding of the pipe section by means of an electromagnetic pulse shaping process, the pipe section 3 and the stroke limiter 4 and the pole section 2, as described in the previous paragraph, arranged one above the other and inserted into the tool. In this method, the force effect of a pulsed magnetic field is used for acceleration and subsequent deformation of deformation elements made of electrically conductive material. Tools are coils and field translators, which flow through a current pulse generate a pulse-like magnetic field, which exerts a pulsar- and depending on the current very high, inwardly directed force by induction and the generation of an eddy current in the pipe section 3. Immediately a plastic deformation takes place when the force is above the yield point of the pipe section 3. The deformation takes place without damaging the surfaces. Due to the high repeatability of the deformation process in only 0.1 s, the manufacturing costs are reduced.
Das erfindungsgemäße Verfahren wird verwendet, um zumindest 2 Bauteile zu fügen, der Rohrabschnitt und die Hubbegrenzung und/oder der Rohrabschnitt und der Polabschnitt werden gefügt. BezuqszeichenlisteThe inventive method is used to add at least 2 components, the pipe section and the stroke limiter and / or the pipe section and the pole section are joined. LIST OF REFERENCES
1 Polrohrkörper1 pole tube body
2 Polabschnitt2 pole section
3 Rohrabschnitt3 pipe section
4 Hubbegrenzung4 stroke limitation
5 Aufnahmeraum5 recording room
6, 6" Nut6, 6 "groove
7 Hauptabschnitt7 main section
8 Fügeabschnitt8 joining section
9 Schulter9 shoulder
10 Einformabschnitt10 Einformabschnitt
11 , 11" Rohrabschnittende11, 11 "pipe end
12 Aufwölbung12 bulge
13 Umform kante13 forming edge
14, 14' Ringnut14, 14 'annular groove
15, 15' Dichtring15, 15 'sealing ring
16 Seitenwand16 side wall
17 Seitenwand17 sidewall
18 Außenring 18 outer ring

Claims

Patentansprüche claims
1. Verfahren zur Herstellung eines Polrohres einer Hubmagnetanordnung, das einen Polrohrkörper (1 ) aufweist, welcher sich axial in einen Polab- schnitt (2) sowie einen Rohrabschnitt (3) und eine Hubbegrenzung (4) gliedert, die gemeinsam einen Aufnahmeraum (5) für einen Anker des Hubmagneten bilden, umfassend das Bereitstellen (s1 ) des Rohrabschnittes (3), das Bereitstellen (s2) der Hubbegrenzung (4) und/oder des Polabschnittes1. A method for producing a pole tube of a Hubmagnetanordnung having a Polrohrkörper (1) which axially in a Polab- section (2) and a pipe section (3) and a Hubbegrenzung (4) divided, which together a receiving space (5) for an armature of the lifting magnet, comprising providing (s1) the pipe section (3), providing (s2) the stroke limiter (4) and / or the pole section
(2) mit jeweils einer an der Außenseite radial umlaufenden Nut (6, 6'), das Anordnen (s3) eines freien Endes (11 , 11 ') des Rohrabschnittes (3) über der jeweiligen Nut (6, 6'), dadurch gekennzeichnet, dass das Rohrabschnittende (11 , 11*) auf seinem gesamten Umfang kontinuierlich reduziert wird und so formgenau in die Nut (6, 6') eingeformt (s4) wird.(2), each having a groove (6, 6 ') running around radially on the outside, arranging (s3) a free end (11, 11') of the pipe section (3) over the respective groove (6, 6 ') characterized in that the pipe section end (11, 11 * ) is continuously reduced over its entire circumference and thus molded in shape into the groove (6, 6 ') is formed (s4).
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Einformen (s4) des Rohrabschnittendes (11 , 11') ein Rundknetverfahren umfasst.2. The method according to claim 1, characterized in that the molding (s4) of the pipe section end (11, 11 ') comprises a rotary swaging method.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Einformen (s4) des Rohrabschnittendes (11 ,11') ein elektromagnetisches Pulsformungsverfahren, insbesondere ein elektromagnetisches Pulsfügen umfasst.3. The method according to claim 1 or 2, characterized in that the molding (s4) of the pipe section end (11, 11 ') comprises an electromagnetic pulse shaping method, in particular an electromagnetic pulse joining.
4. Verfahren nach einem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Rohrabschnitt (3) soweit über die Hubbegrenzung (4) aufgeschoben wird, bis das Rohrabschnittende (11 ) an einer Anlagefläche der Hubbegrenzung (4) anliegt.4. The method according to any preceding claim, characterized in that the pipe section (3) as far as the stroke limiter (4) is pushed until the pipe section end (11) rests against a contact surface of the stroke limiter (4).
5. Polrohr, insbesondere für eine Hubmagnetanordnung, hergestellt gemäß dem Verfahren nach den Ansprüchen 1 bis 4. 5. pole tube, in particular for a Hubmagnetanordnung prepared according to the method of claims 1 to 4.
6. Polrohr nach Anspruch 5, dadurch gekennzeichnet, dass sich der Rohrabschnitt (3) in einen Hauptabschnitt (7) mit regulärer Wandstärke und in einen stirnseitigen Fügeabschnitt (8) mit geringerer Wandstärke aufteilt.6. pole tube according to claim 5, characterized in that the pipe section (3) in a main portion (7) with regular wall thickness and in an end-side joining portion (8) with a smaller wall thickness divides.
7. Polrohr nach Anspruch 6, dadurch gekennzeichnet, dass sich der Fügeabschnitt (8) an einer Schulter (9) innen aufweitet und in einen Einformabschnitt (10) mit reduzierter Wandstärke bei erweitertem Innendurchmesser übergeht.7. pole tube according to claim 6, characterized in that the joining portion (8) on a shoulder (9) widens inside and merges into a Einformabschnitt (10) with reduced wall thickness at an enlarged inner diameter.
8. Polrohr nach Anspruch 7, dadurch gekennzeichnet, dass die Hubbegrenzung (4) eine die Ringnut (6, 6') rohrabschnittseitig begrenzende Aufwölbung (12) aufweist, die eine Umformkante (13) bildet, an der der Einformabschnitt (10) in einem an einer Innenumfangsfläche gemessenen Winkel zwischen 90° und 130°, vorzugsweise 120°, umgebogen ist.8. pole tube according to claim 7, characterized in that the stroke limiter (4) has an annular groove (6, 6 ') on the pipe section side limiting bulge (12) which forms a forming edge (13) on which the Einformabschnitt (10) in one measured at an inner peripheral surface angle between 90 ° and 130 °, preferably 120 °, is bent.
9. Polrohr nach Anspruch 8, dadurch gekennzeichnet, dass die Aufwölbung (12) die Anlagefläche für die Schulter (9) bildet. 9. pole tube according to claim 8, characterized in that the bulge (12) forms the contact surface for the shoulder (9).
EP09777376A 2008-08-01 2009-07-23 Process for producing a pole tube Not-in-force EP2308062B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008036007A DE102008036007A1 (en) 2008-08-01 2008-08-01 Method for producing a pole tube and pole tube
PCT/EP2009/005335 WO2010012410A1 (en) 2008-08-01 2009-07-23 Process for producing a pole tube and pole tube

Publications (2)

Publication Number Publication Date
EP2308062A1 true EP2308062A1 (en) 2011-04-13
EP2308062B1 EP2308062B1 (en) 2012-03-28

Family

ID=41346109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09777376A Not-in-force EP2308062B1 (en) 2008-08-01 2009-07-23 Process for producing a pole tube

Country Status (4)

Country Link
EP (1) EP2308062B1 (en)
AT (1) ATE551704T1 (en)
DE (1) DE102008036007A1 (en)
WO (1) WO2010012410A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015006009A1 (en) * 2015-05-13 2016-11-17 IFUTEC Ingenieurbüro für Umformtechnik GmbH Method for joining by rotary swaging

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717445C2 (en) * 1997-04-25 1999-11-18 Bso Steuerungstechnik Gmbh Electromagnet, in particular for actuating valves
DE10327209B3 (en) * 2003-06-17 2004-09-02 Hydac Electronic Gmbh Switching arrangement, especially for actuating valves, has anti-stick device with axial connecting part enclosing actuating part with defined radial separation and engaging opening in pole core
DE102005062738B4 (en) * 2005-12-22 2009-02-26 Geberit Technik Ag Method for producing a pipe press connection and pipe press connection

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010012410A1 *

Also Published As

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WO2010012410A1 (en) 2010-02-04
DE102008036007A1 (en) 2010-02-04
ATE551704T1 (en) 2012-04-15
EP2308062B1 (en) 2012-03-28

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